The ''fou'' is an percussion instrument consisting of a pottery or bronzeware crock, jar, pot, or similar vessel, which was struck with a stick. Its origin dates back to the or dynasties, where it was used in ritual music. It later became a standard instrument in ritual ensembles.
The ''fou'' as an instrument was not confirmed until a discovery of nearly 500 musical instruments in the Tombs for Nobles of the State, Wuxi City, Jiangsu Province. Also found there were nine other varieties of instruments, including the ''yongzhong'' and ''qing'' from the , ''chunyu'' , ''dingning'' , ''duo'' and ''ling'' .
It made its modern appearance during the 2008 Summer Olympics Opening Ceremony in Beijing. Towards the beginning of the ceremony, 2,008 dancer/percussionists staged a synchronized presentation, striking large square ''fou'' with glowing red sticks. Those instruments had a white square surrounding each drum, allowing them all to produce both music and a dazzling display, which included Chinese characters and shapes created in tandem.
The Chinese character ''fou'' is used to refer to containers. The character has fallen into disuse in Chinese; however, it still used to referred . Since the and dynasties, some types of those containers were used as musical instruments known as "percussion fou" . Since its publicity, there has been some scholarly disputes on whether the ''fou'' used during the Olympics were actually musical instruments, as they could simply have been containers.
In the Confucian ritual music of Korea, a musical instrument made from a clay pot, called the ''bu'' , which is derived from the ''fou'', is used.